Water is flowing in a cylindrical pipe of varying circular cross-sectional area, and at all points the water completely fills the pipe.  At one point in the pipe, the radius is 0.135 m . What is the speed of the water at this point if the volume flow rate in the pipe is 1.25 m3/s? Express your answer in meters per second.   At a second point in the pipe, the water speed is 3.50 m/s . What is the radius of the pipe at this point? Express your answer in meters.

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter15: Fluids
Section: Chapter Questions
Problem 47PQ
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Water is flowing in a cylindrical pipe of varying circular cross-sectional area, and at all points the water completely fills the pipe. 

At one point in the pipe, the radius is 0.135 m . What is the speed of the water at this point if the volume flow rate in the pipe is 1.25 m3/s? Express your answer in meters per second.
 
At a second point in the pipe, the water speed is 3.50 m/s . What is the radius of the pipe at this point?
Express your answer in meters.
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